Internal combustion engine construction



Jan. 16, 1940. w, TOBLER 2,187,287

INTERNAL CDNBUSTION ENGINE CQNSTRUGTION Filed Oct. 6, 1938 nwzer" Z5526?" Fain Attorn gyfi Patented Jan. 16, 1940 UNITED STATES PATENT OFFICE i 2,187,287 Y a v INTERNAL COMBUSTION ENGINE CONSTRUCTION Werner Tobler, Winterthur-Wnliiingen, Switzerland, assignmto Sulzcr Freres, Societe Anonyine, Winterthur, Switlerland Application October a, 193s, Serial No. 233,514 In Switzerland October 6, 1937 Claims.

This invention relates to a cylinder construction and it is particularly adapted'ror the con: struction of the engine of an internal combustion cylinder. I 5 One object is to provide a cylinder construction so arranged that warping and alteration in the size and shape of the cylinder is compensated for and does not damage the construction. Another object is to provide a cylinder con- .l0 struction for internal combustion engines in which the cylinder as a whole is formed oi several parts arranged for relative movement and in which the parts are so shaped and assembled that relative movement of some of them does not alter the accuracy of the fit of the parts and causes no distortion.

Another object'is to provide a cylinder liner construction in which a plurality of liner parts is used and in which they are so shaped and arranged that when relative temperature variations cause relative movement of the two, distortion of either of them is prevented.

Other objects will appear .irom time to time in the course of the specification and claims.

The invention is illustrated more or less diagrammatically in the accompanying drawing.

The figure is a transverse longitudinal section 0! an engine cylinder and liner with a fragmentary showing of a piston in section and elevation.

Like parts are designated by like characters throughout the specification and drawing.

i is a cylinder liner. 2 is a piston mounted to reciprocate in the cylinder. 3 is a cylinder head 85 which may be of any desired construction and the details of which are not shown as they form no essential part of the invention. For the purposes of the present invention, it is sumcient that someiorm of cylinder head or closure be provided.

4 is a jacket or cylinder housing which supports and encloses the liner l and other parts which will be described. I is a second cylinder lining part or bushing. It forms in eflect a continuation of the liner I, but is arrangedior relative movement and relative expansion and contraction with respect to the liner portion I, as will be described below.

The lower edge of the liner section I is grooved as at 8, and the upper edge of the liner section 5 is provided with a raised extension or flange to, which latter may project into the groove 8. A packing I is positioned intermediate the adjacent ends 0! the sections l and I.

It will be noticed that the jacket 4 is provided with suitable shoulders against which corresponding shoulders or flanges on the liner sections I and 5 are seated and by means 0! which these sections are positioned within the jacket.

As shown, the two liner sections are somewhat separated and a joint or division 8 indicates the point of separation. This joint extends crosswise with respect to the axis of the cylinder. In other words, it is a transverse joint or separation.

' The liner section I is also provided with one or 10 more cut-away slots or cut-away portions such, for example, as the slot 9 which extends from oneof the outermost exhaust ports, as shown in the drawing. The one shown in the figure extends from one o! the exhaust ports III to the lower end or edge of the liner section I.

As shown, the liner section I has a series of ports, in being exhaust ports or slits, and II and I! being admission or inlet ports or slits. The liner section I is termed with an end l3 which, although integral with the section I, is separated from it by the slits or ports III, II and I2, and it is this section i3 which iorms the actual contacting portion or the larger liner with the smaller liner 5. 25

It will be realized that whereas I have herewith shown and described a practical operative device, nevertheless many changes might be made in the size, shape, number and disposition of parts without departing from the spirit of the invention and I wish, therefore, that my showing be taken as in a sense diagrammatic. In particular, there might be almost any desired number of slits or separations 9- and these may be complete slits or they may be grooves. or some 35 of them may be grooves or some may be slits.

I claim:

1. In combination in an internal combustion engine cylinder, a main jacket or housing, ports formed therethrough, a cylinder liner removably positioned within said jacket, corresponding ports formed in said liner, a slot cut from one of said ports, a second liner section relatively shorter than the first mentioned. liner, the two liner sections so shaped that one interpenetrates with 45 the other.

2. In combination in an internal combustion engine cylinder, a main jacket onvhousing, ports formed therethrough, a cylinder liner removably 50 positioned within said jacket, corresponding ports iormed in said liner, a slot cut from one or said ports, a second liner section, the two liner sections so shaped that one interpenetrates with the other, the two cylinder liner sections being 55 diner sections being positioned in the jacket tor relative movement with respect to each other.

4. In combination in an internal combustion engine cylinder, formed therethrough, a cylinder liner removably positioned within said jacket, corresponding ports formed in said liner, a slot cut from one oi said ports, a second liner section relatively shorter than the first mentioned liner, the two'liner sections so'shaped that one interpenetrates with the other, the two cylinder liner sections being positioned in the jacket for relative movement with respect to each other.

5. In combination in an internal combustion engine, a main Jacket defining a cylinder portion, a liner therefo said liner being provided with expansion and contraction spaces positioned transverse to theaxis of said liner, also being provided with expansion spaces positioned generally'in alignment with said axis.

6. In combination in an internal combustion engine, a main Jacket defining a cylinder portion, a liner therefor, said liner comprising a plurality of members, said liner being provided with expansion and contraction spaces positioned transverse to the axis or said liner, also being provided a main jacket or housing, ports with expansion alignment with said axis.

7.- In combination in an internal combustior engine, a main Jacket defining a cylinder portion a liner therefor, said liner comprising a plurality 01' members, one interpenetrating with the other, said liner being provided with expansion and contraction spaces positioned transverse to the axis of said liner. also being provided with expansion spaces positioned generally in alignment with said axis.

8. A multi-part cylinder liner for an internal combustion engine characterized by the fact that there. are formed in the liner a plurality of separating Joints, one oi said Joints being at an angle to the axis or the liner and another being generally aligned wtih said axis.

9. A cylinder liner for an internal combustion engine characterized by the provision in the liner of separating Joints, some of said Joints being at an angle to the axis of the liner and others being generally aligned with said axis, the said spaces positioned generallv iz separating Joints being located outside of said cylinder having scavenging and exhaust ports and the said separating Joints being positioned outside 01' the zone 01' said ports.

10. In combination in an internal combustion cylinder, a main Jacket or housing, exhaust ports i'ormed therethrough, a cylinder liner removably positioned within said Jacket, corresponding exhaust ports formed in said liner, said liner having a separating joint starting at one of the said exhaust ports and continuing to the adjacent end 01' the liner.

WERNER 'IOBLER. 

